Joe Hunt wrote:
A polar low is evident on IR and VIS pics now, pretty much centred
over Shetland.
Sumburgh reports -

I'm new to this, but heard talk of polar lows being "comma" shaped
earlier in the cold flap.. I never thought they would look so distinct and
compact! Great pictue..

Les

METAR EGPB 281120Z 03008KT 0300 +SHSN VV/// M03/M04 Q0993=
METAR EGPB 281050Z 35010KT 2500 -SHSN BKN010CB M02/M04 Q0994=
METAR EGPB 281020Z 33021KT 9999 FEW014CB FEW018 SCT035 M01/M05 Q0994=
METAR EGPB 280950Z 35020G30KT 9999 VCSH FEW014CB SCT034 M01/M06 Q0995=

http://www.west-cheshire.ac.uk/weather/meteosat/d2b.jpg

Joe